Someone says my Axolotl is too lumpy, or ill

[rhotle]

One of my Axolotls is a 4-4.5 inch leucistic. I've had him for two months. He's pretty young and somewhat see-through. I've always noticed that he's been a little lumpy, but thought nothing of it. He eats regularly, acts happy, and poops regularly (I think). Anyway I posted this picture and someone started telling me I was taking care of him incorrectly and that he was too lumpy/not shaped right. Is this person right? I've attached some pictures of him for you to see. I also want to say he's noticably lumpier after eating. Am I overfeeding him? I feel really guilty

Here's a link to the album of pictures: https://photos.app.goo.gl/7aXhxhaC1cpLNyGS2